航行需要良好的导航系统。

Hángxíng xūyào liánghǎo de dǎoháng xìtǒng.

Navigation requires a good navigation system.

飞机在夜间航行更具挑战性。

Fēijī zài yèjiān hángxíng gèng jù tiǎozhàn xìng.

Flying at night poses more challenges during navigation.

这艘船将在明天开始航行。

Zhè sōu chuán jiāng zài míngtiān kāishǐ hángxíng.

The ship will start sailing tomorrow.